Shoe upper



FIG. 1 is a front perspective view of a shoe upper showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a front perspective view of a second embodiment of a shoe upper showing my new design;

FIG. 5 is a side view thereof; and,

FIG. 6 is a rear perspective view thereof.

The broken lines showing the remainder of the shoe are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a shoe upper, as shown and described. 